Swivel-jointed shaft



PATBNTED SEPT. l, 1008.

INT0. $07,315:?.

J. K. STEWART. SWIVEL JOINTBD SHAFT.

APPLICATION FILED I.'ov.1,1so7.

UNITE!) STATES PATENT OFFICE.

JOHN lx', S'LIWART, O'i CHICAGO, ILLINOIS SWIVELLJOINTED SHAFT No. 897,3161 Specication of Application filed November 1I 1907A Seria1.No.iO0.l\

Bo it ki'iown that i, Joinr K. S'ricwmrr, a oilivmn ol' tfhi Unite-d Stilton, residing' ai; Chicago, in the rronntyi'ii' Cook and Stain of iiiinoix, havn inrf-ntnd 'ww and imol'nl in'|pro\' mont-n ill w\/i'si"-iointod Shafts, oi' whioh thi*A foilo'vriiny is a. spooiiioalion, refloronm living had to tho dri'in'fings iin-mini;l a part thorroi".

`hn pnrposo oi thil in volition in to provid@ an iniprovid joint in a ponor-traiininittini; dnv'ii'w l'or trananiitt innr power from a drivingV shaft lo a driven Shaft Whorw dirootion with inspect to the driving shalt variable, and to prin-'ido auch strnrinrv in dosirahh forni for i poi-forming ihis soi-wirr in transmitting pon-'or 'rom ihr when] oi Lin` vfhiohr. to an inriioaiingr or rogisnring ini-whanisin mount-0d on the vohiuio hody for i1`idi at-in1j thi?- npeed or distance i rav'oivd.

The ini'intion consista in the oionwnts and funtnrcs oi conaiinoi ion and tho ooinhinatioi'i simnfn and described, as indii-,atod in the claims.

in tho drawingsIFignre 1 a pian View of n. devine embodying this invention. Fig. 2 in ana-Xiai si ion through ali the shai'ta of the. dex-"ico is a dot-ail seni-ion at the. iin@ 3 w3 on Fig. 2.

This joint oon'i'nises u. two-'part case, the two limits, A and, i3, oaoh oo'niprisix'ig ono-haif of a hollow oylii'idor, 'which are` preforaiiiiy rabhetod together at their junction, as shown at o, for s\vive\lin,gV onel upon the other about the axis of Such oyiindor. The ontoi' ond of nach haiifoyiindur closed. .Ea-oh of the partis, A and B, 'beside the cylindrical main ioiiy portion described, has a hollow arm p roj'e :ting at right 'angios to the axis of said .'oyiiinirioal portion, said arms, A. and B1, heilig designed rclnpeotivoiy to sn )port hef-an ing-` for driving?r and driven sha-iii,oionwnts tran. ae to thi` axis of tho two-partswivoiod cylindrical eie-nionts. Within the, hearing arm, A1, tin-iro is journaiod a driven shaft oie inout, E, which projects from the and oi .said .arm for connection with tho dovioo to. ho ip- `oiatod,-as, for ixanip'io, a speedometer (not showii),---- hy any ponioxtransinitting i'noans, as the. iloxiiilo shaft, f, the. terminal nlen'wni., F, of Whosooasing oix .familiar construction is -Qhown attached to said arm, A (by moans horoinafter donorilwd).

Within tho hoaring arm, i, oi ihn oinniont, B, there is jonrnaiod driving shaft, i, Whiih I'irotrudis from tho ond of said arm and iniagiil'ifd 'for operativo rnnniiciion i to a Whoo), an tho pinion, (.i which is 'prolvidnd I'or i'nosi'iing with a gfoar or goin' rnn E (ni'rt IShown) on tho whool 'winnie spoed or i' distanoo of i'rax'oi is to he nwamnod, The QShaiiH, 'iQ and (i, havo on tiwir innor onda` rvh'pouliviii" within thov rylindrimi nhnnnis, A and i', i' \,vol; "uai's, M and N; and iol' i comnnlniraiing 'rotary nniion ironiono oi' said in i'i-Lgoarfi to tho othoi', and4 also oonnvt-Liangl iognthnr, with capacity for swivoling, tho two fyiindrioai iloinonis, A and B, thor(x is providod. tho structure which will now ho ilfsoriimd. Thiv oonnooting and powr-rtrfuisni'iiiirig strut-inw romprisis,` first, for the pin-lmao ol connue-Ling thitno @hn-- drie-.ai Moments, A and lB, with capacity for swvoiii-ig, a. stool dia-pin'agin hnshi'ng, O, which is mada hist in ono of tho oyiindrioai cionionts to ho comico-tod, and a gonoraiiy nii'niiar hut slightly dii'l'oro'ni stylo of diaphragm hi1Sl'|ing,'P, niado fastin thc other of said two cylindrical olnnnnts. These two dia )hragni bushings, ln, ..\-'er, are not 'prirnariiy made. iastnor ii @ort-od in tho (-yiindiioai elo-monta rosiooti 'oiy,'but are first connector] together ily a Coupling sleeve, Q. which has a very slightly tapered portiini, Q, eixtenilirigior a distano@ from enti, and a (.:yiini'irioai portioii Q1", oxtending from. said taierod portion a digstanco oquai to the thicknoss o1' tho diaphragm, P, said cylindrical portion boing terminated at a. Shoulder formed. hy a iiang'o, QR, which torniinates the said sie-info. 'The diaphragm, O, is provided with a contrai aperture tapered to. receive the taporod ond portion, Qf, of tho sleeve, Qhtho a1 orturo icing of snoh dialnet-or re'lat-ivoiy to t lo said taperod portion that tho latter may, by sufficientpnassnm, ho forced, iherointo up to a. Slight siionhior, q,'\\"hioh proforahiy .marks thi.l iiinit oi tho, tapered portion and the coniinonnonmit of' the rylindrioai i'iortion of the sioovi?, ihn intention boing that when thus forced bigot-hor the niovi'o, Q, and 'diaphragm hnshing, 0, will iimplantiuaiiy insoparahlo hy' ani' foren which. van ho appiiod yin tho nsf-.- of tho dovioo. 'lho diaphragm busliing, l), has n mint-'rai o viinl'i'r-oai aperture adapting it to im jonrrmiodv looooiyv enough for rotation upon tho cylindrical mrtion, Q2, of the sioo'vo, -hr-y iongth of' snc-h cylind rioai por on boing auch that tho said dia-- ii-ion hotweon tio diaphragm, 0, and the. liiango, Q3, Tho throe- I,iarts,--to wit, the

lohm-ign] is siop ind, loosely' enough for rotatwo dia hragm bushings and the sleeve,--

being t us assembled, it will. be seen that there is formed a swivel joint between Ithe `two bushings which can thus rotate relativel 'f to each other about their common axis, which is the axis also of the sleeve. The sleeve is axially apertured cylindi'ially, and affords thereby bearing for the shaft, R, of the bevelgear,'R, which is adapted to'niesh with one of the bevel-gears, M or N,-it is a matter of indi lferenee'whiehfthe parts being' adapted to be assembled for either engagement. The shaft, R, being inserted through the bushing, there is pinned tast upon its end whichprotrudes at -the other side of the bushing a similar bevel gear, R2, adapted. to mesh with the other of the two gears, M and N.

. The .swivel joint device comprises, it will be seen, the two diaphragm bushings, O and P, with the connecting sleeve, and the entire structure comprising siieli swivel joint device .the two "ears R1 and R2 with their h v in Fig. 22.

connecting shaft, lt, and the two ,ii ieiiiln.is, A and B, having mounted on their respective arn'is, A1 and B1, the driving and driven shafts, E and G, with their bevel-gears, M and N', is-asseiiibled j ierinanently by forcing the two bushing diaphragms into the open ends ol' the two cylindrical elen'ieiits, A. and B, until they are stopped. by the shoulders, (I,1 and lil, formed b'y properly eounterboring the open ends of the said cylii'idrieiil elements, said shoulders benne;v at proper distance back from said open ends respectively to thus stop the bushings when the gears are properly interineslied and the rabbel'ed niargins ol the two cylindrical members are suitably entered one within the other, as shown of siieh diameter with respeet to the counterbored open ends of the cylindrical elements into which they are to. be -forced that .being once driven vinto their seats in said elements down to the shoulders mentioned, they are inseparable by any force to which the deviee eau be exposed iny performing the service forwliieli it is designed; but if for any purpose or ,in any situation itis considered desirable to make. further.provision iigaiii'stthe separation of parls` each bushing may be pinned into the cylindrical element to which it belongs, by any convenient means, as by the Preferably thefbushings, O, l), arev screw or other form of fastening engaging a:

th read in stieh relatively soft material.

.Although it is generally satisfactory and usually preferred, tof imite the. sleeve, Q, to

the bushing having the tapered aperture, bfy

tlie'fijptional engagement which may bee il'eeted; byvdriving the tapered. end-ofv the sleeve into the' tapered aperture, yet when?l ever for any'reasoirvit 1s preferred not to rely upon this form of engagement, even though the taperniay be employed, the two parts may be eonneeted by a pin. S2, taking radially tlirouglrthe bushing and into the sleeve. This pin may be threaded and screwed into the parts which it connects, but the threadedi- 1- torni is desirable. only for the convenience of ii-'itzlnlrawing ;it, because it will be retained against any possibility of escaping when'the diaphrgani bushing is driveii'i'nto'itsseat'n the easing, aswill be clearly'understood from And it will be understood tliat,i1 r praetiee, for the usual purposes for which the device is intended, not only are the diapliragni, O, and sleeve, Q, retained in eenneetioii by their frietional engagement at their respective tapered seats, but also both'.

tliediaphragm bushings, and P, are retained in the. respective members' ol the cas ing by fsietional engagement, which ii'iay be iliade sulieiently see-ure erven without taper` ing.

It will be observed that .in order to provide' for properly assembling the parts of this de viee with the gears properly iiite-rnieslu-id there will be a distinct advantage in being able to secure either ot' the gears,l\i and N, to the 'ends of their respective shafts before the shafts andv gearsv thereon are introduced into the easing. It will. also observed that since the shafts, E and (5f',' are necessarily stopped piidwise in one'direetionby the ends ol' theliulis of the gears, M and N, it is iinportant to iiovide smooth shoulders or counterbores about tlie'bearings of said shafts for' the hubs to stop against, and that the making ol such smooth shoulders in the in terior of the cylindrical Sheila-,would involvel some practical di'l'l'ieulty.

The requirements of indicatedaie niet and the diiicnlties indiea ted are avoided by the cons truetion adopted and shown in the drawings in respect to the, .bearing of the shalt, E, 1n which a steel bushing, T, is provided in the arni, A1, the outer dia meter oll suc-li steel 4bushing being siibstan tially equal to the extreme outer dianif-iter of the pinion, M, to the outer j niiiits of its width, so that the pinion can be entered through any bore adapted to reeeive.thel busliiiiv, rllie sleeve or arm', 'A1, has its axial cavity cylindrical, the dianielei olsurli cavity being sueli as lo :receive the sleeve, T, said. sleeve lio convenience` above livin(r horrid :ix'iiill to uil'ord lieuriusf l'oi' ihn living' t-hcn insorlfvd into l'hiy urin, A', lo tlm propo-r dopl'h for meshing; oll thi` nourri, ihn

Jushing' living' prilvrulilyp pro'viilofd with u.

shouldcr t sto i )inw it, on thu und ol' Tho I l I h urni, Al, nt flu proper 1li-spilli l'or suf'h nuishm ing'. Any i'ouvunwnt. molino muy lm oni4` ployod Lo src-ur@ ihn bushing in thv n rni, A l

Llnil` is, to prcvruil ilA witlulrmv'ing. lrill ru-lily, in vww of ihn iuliondvd iiuployninnb o' rvluiivnli' soll. niiizil lor thirusing, l employ ilv ilirouilod pin, Vi'. Hiking;- lhrough liilrrail guur on its spindlev :is dosrzrilwd und lhown in sily und provid(x n. lnishing oll propr-r ninth# riul lo furnish homing' l'or lh0I shaft, u sllvol bushing, V, is ih'ivin .into i-.lu` urnie il', ol rho Slioll, ufllording hy its d u. inished shoulder to stop the huh ol' lhi 'oovvl grin, which Dinnd to Lhr. Slm-ift :il'trr this. hitivr is iumiriid through lehi bushing', V, zuid 'hul'orv ihr hushing', insoriud in lhf opon vnd oi' ilu* yliridrici'il liody. '.lhv :ipplirulion ol' limsi'iin@ n'iodiol ifi-instruction lo tho lwiu'ingA of tho shaft, (fi, is obvious. The arm, Bl, is Shown longer sind of less diziniftor ii-hini ihn iii-in, JU, sind olI loss dieinmirr than would ho necessary to permit thu withdrmwil of the geur through iL, und the vanplovuiontl [or that purpoc oi' fr suitiihly largo bushing, the mlviintagiii of thu-t construct-ion liv-ing sacrificed in rder to adapt the arm, B-, to be held-in a. clamp, U, provided with u. ch'mipirig boli, Ul, .so-that the Wholey 'fitliug inay be a-iljnsiaiihle longitu-4 drnalli1 und ul'iouty the axis of .th girar, Gl,

und. so ihm. an cxrossivcly largo clamp muy be avoidvd und ai i'oz'isonuhly longe,r lien-ring thorfin afforded. i

Il'. will, bv obsirvcd that. whilo the hushil f or Hlouvc linings, V und T, stop tho. licvcl gli-urs', M sind N, ugiiinsi outward murmur-int, there nothing,r lo Stop thvui ugninsii Loo deeplyY n'wshinf;` rWilli ilu gri-urs, lll und ii?,

iXc-i-,pltho din-'hws which .muy im connor-.Lad

i-o thc, out-er ends of l-hc slmftn rvspoctivol-\^,- us, for cxiiniphr, the goin', (il, on the shull, (lg und in. tho construr'tiou shown, thv loxililv` slnifL attached to thcy slnilfli., E, dors not. 1ifford suc-h stop. l. j ilol'iii', Lluiriil'ol'ire To pro videA thi-i shafts, E und G, u( thoir inner ends, with extended lcriuinulss, E und rcsp0c livoly, projmaling ucross the cavity' ol.l the oylindriifz'il inmnlwrs, A and B, und Stopped :ig'i'iinslI i-hrfl opprmitc wall, as noun in Fig. 3.

l rhiiin:

l. '.ln u dovicc for the. pnrpos(I iiidiuuitfd, u. Limcomprisingr two inon'ihL-rs having ouch un oiain (rnd und sisnonililud with (heir open vndh.- .vf-ailingP on@4 upon the other for rotuLion uboot. un avi-Xin :LL righi rifugi@ to `their inet-11, ing plinio, und u dovic@ [or courir ling said. izwo n'mnihors; l'or noch roiiiinri consisting oi' in'o unnnhir difiphrugnis lorniei'l separately from Huid mmuliern and insertifd sind socuriid in illu" proxiniz-Llo vnd I ol' :said ,nwu'ilie-rs ri spf\ ,-li\iol f, und :i ouplingr sleeve.Extending through mid nnnulur dinphrugri longitul dinully uloppi'fd w rvsprfrl, tl'uruto und looselir rol-fithi-n in om ol ille-uri. I

2. lu u. dow-icii lor thv pnrposi. indirinf-irl, u vinnefooiprisiugh two n'nnil'mf having oiirfh i1 closed 0nd und un opten and Iund asisiunlilaed willi Llwir opino. endn naming one upon the illu-ir for rotation :ihmrl n auxin n?. right an glen rio lhifir inenting piana: u.. devine for vonnucting nid two iniei'n'hurs for Surah rom* ion nominating o? :in u'iinaiini diuiihmgni Inserted and swirriil in thv operi und of each nir-.univr und 'hirnu-ed SP'p-fiiulelly ihi'ii'iifroni for :5m-h innerlion und souiirLrineii'it, finil'a. iiriripling Sleeve extending loose. through one. din- Yplu-aghi, longituilinully stoppd ille-renin mi tlm inrrnr side llsmorii und umiley fast in the othir -diiiphrugln 3, In :i dfn-imi lor thi-- piiIl-)USQ iflilvlfl, *i iront cursing comprising' two nuinllmrs which havo ivi-wh. iicioscd und un open and sind hirli :irc iisseniilikd wifh. i-hiir open, if-nds, Turing; u, dei-*iro 'for nonni. members with iii'pi'irii'fy i'or ro rotation filiou! an mais nt righi' anglais to Lluir meng; plume,

Consistingin" two annular zliriplir 11:3 forn'ii'zd se'l'iurfi-trly .from .mail .nloin printk-ely,

und insel" ed und mail@ vl .l i the prox'in'i'l'@ @nds of sind respective iriei'nl'ievrs, sind. a sleeve which Vconnects them rotatably' about] the axis; thc-rem". y

4. in a. dev :ze for the purpose indir-iiterl, u. guar cam-i comprising: two members ussem bled and to end with cupa ly for rotation about :1r axis at right any; in their meeting plinio und having; their opp mit? ends cloned g a dln-iro for connor-ring Suid bwu munburs 'for such rolmion rousislin'r ol di connor-ts .sind dinphrugumi rfifatiil -nbout thu iixis of tho slow-r, sufid/luv'inhcr icing intiriorly shouldorcd to stop lhe diuphmgrn'is rwliertivoly, thv diaphrugn'is hiring mhiptcd to ho ,lori'r-d,ifigl'uinto the srlvuw-S to the Hhonldvrs und lo rut-:iin thi-i two 1ii\".,ii'il10rsy t0- gotlur hy thi-ir i'rictioiml migugmninl; with Suid inoinhcrs respon! ivrly.

y with their open en s Seating one uponthe other for rotation about an axis at r1 ht anglee to their meeting plane; a device or corr-- meeting` said two members for such rotation consisting of two diaphragms adapted to be driven tight into the ends of said members respectively, and axially apertured and provided with a 'swivel connection aboutsneh axial apertures.

6. In a device for the purpose indicated, a case comprising two members having each an open end and seated one-upon the other at their said open ends, each member having a transverse shaft bearing, and a shaft jonrnalcd therein provided with a gear at its inn ner end within theI case member, in combination with a device for connecting-said case members with capacity for relative rotation about an axis at right angles to their meeting plane and transmittingr rotation from one of l said shafts to the other, consisting of two annular diaphragme formed separately from said case members respectively, and adapted to be inserted and secured in the open ends of said respective members; a sleeve which connects said diapl'iragms rotatable about their axis; a shaft extending.;i axially through the sleeve and journaled ltherein, and gears on the sleeves at opposite sides of the dia 4phrrilgms adapted to-mesh respectively with the r'st mentioned gears.- l

7. In a devioefoi" the purpose indicated, a case comprising two members having transverse shaft bearings and having veachone closed and one open end, sai l members being adapted for seating one upon the other at their open ends; a device for connecting said case members with capacity for relative rotation about an axis at right angles to their meeting 'plane comprising axially apertured diaphragms adapted to be forced tight into the open ends of the n'ienibcrs respectively, and a coiiiplingr sleeve connecting said diaphragms fhavinyf a cylindrical port-ion adapt ed to he jonrnaled loose for rotation in one of the diaphragms, and provided with an end ilange stopped thereon, the other end of the sleeve'being slightly tapered For drivingir tight' into the axialv aperture oi the other diaphragm, said aperture being similarly tapered, the sleeve being provided with a stop shoulder to limit its insertion into said tapered aperture olE the diaplnagni.

ln testimony whereof, lI have `hereunto set my hand at Chicago, illinois, this 30th day of. October, 1907.

Jer-1N K. STEWART.'

Witnesses:

(VfnAs. S. BnirroN, J. Anno'r'r, 

